Trusted by Hundreds of Companies Globally

Technical Specifications

Advanced dispersive mixing screw engineered for exceptional melt homogenization, throughput, and purge performance.

PARAMETER
SPECIFICATION
Product Name
Posi-Melt™ XLA Mixing Screw
Technology Type
Advanced dispersive and extensional mixing screw geometry
Mixing Principle
Multi-directional flow redirection and extensional strain over shallow lands
Flight Geometry
Variable pitch and positive pumping angle with wiping major flight OD
Homogenization Effect
Forces multiple direction changes for fine melt dispersion and temperature uniformity
Pressure Performance
Low pressure drop; pressurized channels enable efficient purging and material changeover
Throughput
High output efficiency with minimal shear degradation
Diameter Range
Available from 14 mm – 240 mm (custom designs available)
Material Compatibility
Engineered resins, filled compounds, color concentrates, and high-viscosity polymers
Applications
Injection molding, extrusion, compounding, and color/changeover-critical processes
Construction Material
High-strength tool steel or specialty wear/corrosion-resistant alloys
Installation
Direct retrofit for most OEM machine designs
Performance Benefits
Superior melt mixing, rapid purging, improved color dispersion, and stable melt flow
Country of Origin
🇺🇸 United States

Engineered for Superior Performance

Our patented Posi-Melt™ technology delivers unmatched melt quality and processing efficiency across all polymer types.

Patented Technology

Proprietary feed screw technology that alters flight pitch and root through the melting section, making them un-tangential to disrupt laminar flow for superior mixing.

Enhanced Melt Quality

Increases plastic exposure to barrel wall by up to 60%, delivering uniform homogenized melt with consistent temperature and material distribution.

Faster Changeovers

Quicker color and material changeovers reduce downtime and increase productivity, leading to lower manufacturing costs and improved operational efficiency.

Complete Pressurization

Complete pressurization throughout ensures excellent conveying, melting, and pumping performance with positive pumping angle and major flight OD wiping action.

High Throughput

Designed for low pressure drop and high throughput with appropriate leading and trailing edge radii to avoid low-velocity sections and maximize pressure.

Versatile Applications

Suitable for injection molding, extrusion, blow molding, LSR applications, 3D printing, rubber machinery, and corrosion-resistant environments.

Frequently Asked Questions

What makes Posi-Melt™ screws different from conventional XLA Mixing Screws?
Posi-Melt™ screws feature patented technology that alters flight pitch and root through the melting section, making them un-tangential to disrupt laminar flow and increase plastic exposure to the barrel wall by up to 60%.
What diameter range is available for Posi-Melt™ screws?
Our Posi-Melt™ screws are available in diameters ranging from 14mm through 240mm, covering a wide range of injection molding and extrusion applications.
Which polymer materials are compatible with Posi-Melt™ screws?
Posi-Melt™ screws work with all major polymers including LCP, PC, Rigid PVC, PP, HDPE, LDPE, PS, PET, and ABS materials for various processing applications.
How do Posi-Melt™ screws reduce manufacturing costs?
The enhanced mixing and uniform melt delivery result in quicker color and material changeovers, reduced scrap rates, and improved cycle times, all contributing to lower manufacturing costs.
Can I get a custom Posi-Melt™ screw designed for my specific application?
Yes, MD Plastics offers direct consultation with company owner Mike Durina for custom screw design, along with technical knowledge and software programs for optimization to match your specific requirements.

Industries We Serve

Serving diverse sectors with specialized plasticating solutions for enhanced manufacturing performance.

Automotive manufacturing with injection molded components and plastic parts production#1.6

Automotive

Precision plasticating solutions for high-quality automotive components requiring consistent melt quality and performance.

Medical device manufacturing with sterile plastic components and precision molding equipment#1.6

Medical Devices

Advanced plasticating technology ensuring purity and precision for critical medical device manufacturing applications.

Consumer electronics manufacturing with plastic housing components and injection molding systems#1.6

Consumer Electronics

Innovative solutions for complex electronic housings and components requiring superior surface finish and dimensional accuracy.

Industrial plastic processing facility with extrusion and injection molding equipment#1.6

Additive Manufacturing

Specialized plasticating systems for 3D printing and additive manufacturing, delivering consistent filament quality and material flow.

Industrial plastic processing facility with extrusion and injection molding equipment#1.6

Plastic Processing

Comprehensive plasticating solutions for general plastic processing applications across various manufacturing sectors.

Complete Plasticating Solutions

Explore our comprehensive range of complementary products designed to optimize your entire plasticating system performance.

MDP Performance Non-Return Valve

Revolutionary valve with patented design featuring low pressure drop for improved hydraulics, precise shutoff, and extended wear life of 6-7 years with all polymers.

Mini-Shut Automatic Shut-Off Nozzle

Cost-effective solution eliminating drooling and stringing with instantaneous shutoff, free material flow with minimal pressure loss, and compatibility with all machine sizes.

Inject-EX Plasticating System

Revolutionary system with stationary Posi-Melt™ screw providing consistent output-recovery time, ultra-precise shot control, and enhanced energy efficiency with smaller footprint.

Need a Custom Plasticating Solution?

Speak directly with Mike Durina for personalized consultation and custom screw design tailored to your specific requirements.

Let's Optimize Your Processing Together

Ready to experience the benefits of Posi-Melt™ technology? Contact us for a custom consultation and quote tailored to your specific application.

For immediate assistance, call (330) 482-5100 or email us at [email protected]

Request Custom Quote

For immediate assistance, call (330) 482-5100 or email us at [email protected]